Description:
iptables.service is a utility for configuring and maintaining iptables
Rationale:
iptables.service will load the iptables rules saved in the file /etc/sysconfig/iptables at boot, otherwise the ip6tables rules will be cleared during a re-boot of the system.
Remediation:
Run the following command to enable and start iptables:
# systemctl --now start iptables